Originally Posted by
djohannw
so I still do not see why this should not work for ZRH as well
You are very welcome to read up on the complexities of airspace management at/around ZRH.
www.skyguide.ch is a good starting point.
And pay special attention to the extra restrictions placed on the TMA by Germany, which begins about 10nm north of ZRH. Let's just say that the residents 10nm north of O'Hare don't get the same kind of leverage...